My collection of TSR products...

[Lidgar]

Menzoberranzan and The Book of Drow are great resources for running a drow-focused campaign (coupled with D1-3). The Underdark modules (and boxed sets) are pretty good too.

 

[grodog]

Hey Merric---

Do you have UK6? It's not explicitly a GH module, but I've put it to good use as one path through the mountains bordering the Suel Empire into the Sea of Dust.

 

[Swedish Chef]

Personally, I found the Complete Thief's book to be indispensable, but I love playing thieves, so I'm a bit biased on that one.

I also collected almost everything put out for Al Qadim. My group has never wanted to play in that setting, but I always found it intriguing. Even now, I occasionally pull out the boxed sets and read through them for inspiration.

 

[MerricB]

Hey Merric---

Do you have UK6? It's not explicitly a GH module, but I've put it to good use as one path through the mountains bordering the Suel Empire into the Sea of Dust.

Yes, I do, Allan! Interesting use for it... the last time my campaign visited the Sea of Dust was in 2001, when they accidentally ended up there through a magic portal.

Cheers!

 

[Whisper72]

Personally, I really like the spelljammer stuff. Is used to use the rules for spelljamming vessels for steampunk type campaigns, where the vessels were pretty much bound to the same world (i.e. no crystal sphere hopping etc.), and so were basically a type of airforce.

The hardcover rulebook on the planes (manual of the planes) also saw a lot of use in my games.

If you are a fan of Darkmoor, the DA series is a must have...

The entire UK series is of high quality...

In my mind, if you like BECMI type D&D, you simply owe it to yourself to own the entire B/X range of products. The other modules (CM/M/I) are more wacky / work less well imho, though are a good read, especially if you are more into gaining fiefs etc.